docs updated

README.md

@@ -5,9 +5,8 @@ It scans the event folder, reads `.MLG` headers to identify unit IDs, and prints
 - Last event received  
 - Age since last call-in  
 - OK / Pending / Missing states  
-- Bench and ignored units  
-- Unexpected units  
-- Notes from the roster file  
+- Detected units (no roster required)  
+- Optional API heartbeat to Seismograph Fleet Manager backend
 
 This script is part of the larger **Seismograph Fleet Manager** project.
 
@@ -17,7 +16,6 @@ This script is part of the larger **Seismograph Fleet Manager** project.
 
 - Python 3.8 (Windows 7 compatible)  
 - Blastware 10 event folder available locally  
-- `series3_roster.csv` in the configured path  
 - `config.ini` in the same directory as the script  
 
 Install dependencies with:
@@ -34,12 +32,11 @@ Run the emitter from the folder containing the script:
 
 The script will:
 
-1. Load the roster file  
-2. Scan the Blastware event folder for `.MLG` files  
-3. Sniff each file header for the unit ID  
-4. Print a status line for each active unit  
-5. Refresh the roster automatically if `ROSTER_URL` is set  
-6. Write logs into the `emitter_logs/` folder  
+1. Scan the Blastware event folder for `.MLG` files (within a max age window).  
+2. Sniff each file header for the unit ID.  
+3. Print a status line for each detected unit (OK / Pending / Missing).  
+4. Optionally POST a heartbeat payload on an interval when `API_ENABLED=true`.  
+5. Write logs into the `emitter_logs/` folder and auto-clean old logs.
 
 ---
 
@@ -49,11 +46,18 @@ All settings are stored in `config.ini`.
 
 Key fields:
 
-- `SERIES3_PATH` – folder containing `.MLG` files  
-- `ROSTER_FILE` – path to the local roster CSV  
-- `ROSTER_URL` – optional URL for automatic roster downloads  
-- `SCAN_INTERVAL_SECONDS` – how often to scan  
-- `OK_HOURS` / `MISSING_HOURS` – thresholds for status  
+- `SERIES3_PATH` — folder containing `.MLG` files  
+- `SCAN_INTERVAL_SECONDS` — how often to scan  
+- `OK_HOURS` / `MISSING_HOURS` — thresholds for status  
+- `MLG_HEADER_BYTES` — how many bytes to sniff from each `.MLG` header  
+- `RECENT_WARN_DAYS` — log unsniffable files newer than this window  
+- `MAX_EVENT_AGE_DAYS` — ignore events older than this many days  
+- `API_ENABLED` — enable/disable heartbeat POST  
+- `API_URL` — heartbeat endpoint  
+- `API_INTERVAL_SECONDS` — heartbeat frequency  
+- `SOURCE_ID` / `SOURCE_TYPE` — identifiers included in the API payload  
+- `LOG_RETENTION_DAYS` — auto-delete logs older than this many days  
+- `COLORIZE` — ANSI color output (off by default for Win7)
 
 ---
 
@@ -68,7 +72,7 @@ Git ignores all log files but keeps the folder itself.
 
 This repo follows **Semantic Versioning (SemVer)**.
 
-Current release: **v1.0.0** – stable baseline emitter.  
+Current release: **v1.2.0** — rosterless scanning with API heartbeat option.  
 See `CHANGELOG.md` for details.
 
 ---
@@ -76,4 +80,3 @@ See `CHANGELOG.md` for details.
 ## License
 
 Private / internal project.
-```